CN201627820U - Differential sliding bearing - Google Patents
Differential sliding bearing Download PDFInfo
- Publication number
- CN201627820U CN201627820U CN2010201529363U CN201020152936U CN201627820U CN 201627820 U CN201627820 U CN 201627820U CN 2010201529363 U CN2010201529363 U CN 2010201529363U CN 201020152936 U CN201020152936 U CN 201020152936U CN 201627820 U CN201627820 U CN 201627820U
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- Prior art keywords
- differential
- rotating shaft
- bearing
- ring
- gear
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Abstract
The utility model discloses a differential sliding bearing which comprises a bearing bush and a differential mechanism, wherein the external surface of the bearing bush is tightly matched with the internal wall of a bearing seat; a rotating shaft is rotatably matched with the internal wall of the central hole of the bearing bush; the differential mechanism comprises a differential ring, an external ring and a gear which is fixed on the end part of the shaft neck of the rotating shaft; the differential ring is connected with the rotating shaft and the bearing bush in a way of clearance fit; the external wall of the external ring is tightly matched with the internal wall of the bearing seat; the internal wall of the external ring is provided with an internal tooth ring; the external end surface of the differential ring is also provided with at least three reducing gears that are uniformly distributed along the circumference; the reducing gear is fixedly connected with the external end surface of the differential ring; and the reducing gear is engaged with the internal tooth ring and the gear. The differential sliding bearing has advantages of long service life and strong load capability and is suitable for the high-speed rotating shaft.
Description
Technical field
The utility model relates to a kind of bearing, specifically is a kind of differential type sliding bearing.
Background technique
Bearing is to go up the conventional machinery part of revolving meber in order to support axle journal or axle, can be divided into rolling bearing and sliding bearing according to the working principle of bearing.Sliding bearing is widely used in fields such as industrial production, farm machinery, automobile, electric tool.The sliding bearing of prior art, its structure generally comprises bearing shell, described bearing shell outer surface and bearing support drive fit, the center hole of bearing shell is used to install rotating shaft, described rotating shaft and bearing shell center hole Spielpassung, and described rotating shaft is provided with the helical oil groove, oil groove is behind logical lubricant oil, can be full of lubricant film between bearing shell and rotating shaft, this lubricant film not only plays the shock resistance effect, and can reduce the friction between bearing shell and the rotating shaft.
This sliding bearing of prior art is when rated speed turns round, relative rotation speed between bearing shell and the rotating shaft is the rated speed of sliding bearing, when the rotating speed of rotating shaft surpasses the rated speed of sliding bearing, relative rotation speed between bearing shell and the rotating shaft is higher, bearing shell can be crossed thermal burn and can not work on, thereby has shortened the working life of sliding bearing.This sliding bearing has limited the rotating speed of rotating shaft, but the speed-raising of automobile, train at present, and the speed-raising of industrial machinery, even comprise speed-raising of high-speed computer driving mechanism etc., life-span and suitable high rotating speed rotating shaft to sliding bearing have all proposed very strict requirement, and traditional this sliding bearing will be not suitable for the demand of high rotating speed machinery, high-speed computer driving mechanism etc.
In addition, because rotating shaft cooperates with the bearing shell rotation, the load of rotating shaft will directly be transferred on the bearing shell.If when the load that bearing shell bore load comparatively concentrated or rotating shaft can not be assigned on the bearing shell uniformly, bearing shell may break or wear and tear because stress concentrates, the load-carrying ability of bearing is lower like this, and working life is shorter.
The model utility content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provides a kind of long service life, load-carrying ability strong, and is fit to the differential type sliding bearing of high rotating speed rotating shaft.
Technical solution of the present utility model is, a kind of differential type sliding bearing with following structure is provided: it comprises bearing shell, the inwall drive fit of the outer surface of described bearing shell and bearing support, the inwall of rotating shaft and bearing shell center hole is rotatably assorted, it also comprises differential attachment, described differential attachment comprises differential circle, outer ring and the gear that is fixed on the axle journal end of rotating shaft, described differential circle and rotating shaft and the equal Spielpassung of bearing shell, the inwall drive fit of the outer wall of described outer ring and bearing support, the inwall of described outer ring is provided with ring gear, the exterior edge face of described differential circle is provided with at least three along the equally distributed reduction gear of circumference, described reduction gear is fixedlyed connected with the exterior edge face of differential circle, described reduction gear all with ring gear and gear engagement.
After adopting above structure, the utility model differential type sliding bearing compared with prior art, have the following advantages: owing between bearing shell and rotating shaft, be provided with differential attachment, when rotating, rotating shaft drives the differential attachment running, this differential attachment has carried out classification with rotating shaft with respect to the rotating speed between the bearing shell, the rotating speed that is rotating shaft is after passing to differential attachment, and the rotating speed of differential attachment is far below the rotating speed of rotating shaft, so the rotating speed of the relative bearing shell of differential attachment is far below the rotating speed of rotating shaft.Under the situation of bearing rated speed, can improve the rotating speed of rotating shaft greatly like this, so this sliding bearing can be fit to the requirement to sliding bearing such as high rotating speed machinery, high-speed computer driving mechanism.In addition, under the same rotational speed of rotating shaft, therefore the relative rotation speed that bearing shell bore of the utility model differential type sliding bearing, has reduced the wearing and tearing of bearing shell far below the rotating speed that bearing shell bore of traditional sliding bearing, has improved the working life of sliding bearing.Moreover, the load that rotating shaft is born is not directly transferred to above the bearing shell, but by being delivered to above the bearing shell uniformly again after the uniform distribution of differential attachment, thereby make the load of rotating shaft carry out the secondary uniform distribution, reduce rotating shaft load distribution inequality and caused bearing bush abrasion, further prolong the working life of bearing, simultaneously, also improved the load-carrying ability of bearing.
As a kind of improvement, the outer surface of described differential circle is provided with the helical oil groove.And also be provided with the helical oil groove in the rotating shaft, this helical oil groove can make things convenient for entering of lubricant oil when differential attachment rotates, make between differential attachment and the bearing shell and between differential attachment and the rotating shaft to be full of lubricant film, not only strengthened the impact resistance of bearing, and reduced friction.
As a kind of improvement, be provided with seal ring I between the inner of described bearing shell and the differential circle, be provided with seal ring II between described rotating shaft and the differential circle, the design of seal ring I and seal ring II can effectively stop the excessive of lubricant film.Thereby the Security and the reliability of this sliding bearing have been improved.
Description of drawings
Fig. 1 is the Facad structure schematic representation of the utility model differential type sliding bearing.
Fig. 2 is the A-A cross-sectional view of the utility model differential type sliding bearing in Fig. 1.
As shown in the figure:
1, bearing shell, 2, rotating shaft, 3, bearing support, 4, differential circle, 5, gear, 6, reduction gear, 7, ring gear, 8, seal ring II, 9, the outer ring, 10, seal ring I, 11, oil groove.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1 and Figure 2;
The utility model differential type sliding bearing, it comprises bearing shell 1, the inwall drive fit of the outer surface of described bearing shell 1 and bearing support 3, rotating shaft 2 is rotatably assorted with the inwall of bearing shell 1 center hole, it also comprises differential attachment, described differential attachment comprises differential circle 4, outer ring 9 and the gear 5 that is fixed on the axle journal end of rotating shaft 2, described differential circle 4 and rotating shaft 2 and bearing shell 1 equal Spielpassung, the inwall drive fit of the outer wall of described outer ring 9 and bearing support 3, the inwall of described outer ring 9 is provided with ring gear 7, the exterior edge face of described differential circle 4 is provided with at least three along the equally distributed reduction gear 6 of circumference, described reduction gear 6 is fixedlyed connected with the exterior edge face of differential circle 4, and described reduction gear 6 all meshes with ring gear 7 and gear 5.
Be equipped with helical oil groove 11 on the outer surface of described differential circle 4 and rotating shaft 2.
Be provided with seal ring I 10 between the inner of described bearing shell 1 and the differential circle 4, be provided with seal ring II 8 between described rotating shaft 2 and the differential circle 4.
Claims (3)
1. differential type sliding bearing, it comprises bearing shell (1), the inwall drive fit of the outer surface of described bearing shell (1) and bearing support (3), rotating shaft (2) is rotatably assorted with the inwall of bearing shell (1) center hole, it is characterized in that: it also comprises differential attachment, described differential attachment comprises differential circle (4), outer ring (9) and the gear (5) that is fixed on the axle journal end of rotating shaft (2), described differential circle (4) and rotating shaft (2) and the equal Spielpassung of bearing shell (1), the inwall drive fit of the outer wall of described outer ring (9) and bearing support (3), the inwall of described outer ring (9) is provided with ring gear (7), the exterior edge face of described differential circle (4) is provided with at least three along the equally distributed reduction gear of circumference (6), described reduction gear (6) is fixedlyed connected with the exterior edge face of differential circle (4), and described reduction gear (6) all meshes with ring gear (7) and gear (5).
2. differential type sliding bearing according to claim 1 is characterized in that: the outer surface of described differential circle (4) is provided with helical oil groove (11).
3. differential type sliding bearing according to claim 1 is characterized in that: be provided with seal ring I (10) between the inner of described bearing shell (1) and the differential circle (4), be provided with seal ring II (8) between described rotating shaft (2) and the differential circle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201529363U CN201627820U (en) | 2010-04-01 | 2010-04-01 | Differential sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201529363U CN201627820U (en) | 2010-04-01 | 2010-04-01 | Differential sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627820U true CN201627820U (en) | 2010-11-10 |
Family
ID=43059214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201529363U Expired - Fee Related CN201627820U (en) | 2010-04-01 | 2010-04-01 | Differential sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213261A (en) * | 2010-04-01 | 2011-10-12 | 宁波午阳联合轴承有限公司 | Differential sliding bearing |
-
2010
- 2010-04-01 CN CN2010201529363U patent/CN201627820U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213261A (en) * | 2010-04-01 | 2011-10-12 | 宁波午阳联合轴承有限公司 | Differential sliding bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20130401 |